blob: 0712a6673907db74e5e57ff59b2343798d0b7218 [file] [log] [blame]
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
/**
* @file
* @brief Nios II C-domain interrupt management code for use with Internal
* Interrupt Controller (IIC)
*/
#include <kernel.h>
#include <kernel_structs.h>
#include <arch/cpu.h>
#include <irq.h>
#include <misc/printk.h>
#include <sw_isr_table.h>
#include <ksched.h>
#include <kswap.h>
#include <tracing.h>
void z_irq_spurious(void *unused)
{
ARG_UNUSED(unused);
printk("Spurious interrupt detected! ipending: %x\n",
_nios2_creg_read(NIOS2_CR_IPENDING));
z_NanoFatalErrorHandler(_NANO_ERR_SPURIOUS_INT, &_default_esf);
}
void z_arch_irq_enable(unsigned int irq)
{
u32_t ienable;
unsigned int key;
key = irq_lock();
ienable = _nios2_creg_read(NIOS2_CR_IENABLE);
ienable |= (1 << irq);
_nios2_creg_write(NIOS2_CR_IENABLE, ienable);
irq_unlock(key);
};
void z_arch_irq_disable(unsigned int irq)
{
u32_t ienable;
unsigned int key;
key = irq_lock();
ienable = _nios2_creg_read(NIOS2_CR_IENABLE);
ienable &= ~(1 << irq);
_nios2_creg_write(NIOS2_CR_IENABLE, ienable);
irq_unlock(key);
};
/**
* @brief Interrupt demux function
*
* Given a bitfield of pending interrupts, execute the appropriate handler
*
* @param ipending Bitfield of interrupts
*/
void _enter_irq(u32_t ipending)
{
int index;
#ifdef CONFIG_EXECUTION_BENCHMARKING
extern void read_timer_start_of_isr(void);
read_timer_start_of_isr();
#endif
_kernel.nested++;
#ifdef CONFIG_IRQ_OFFLOAD
_irq_do_offload();
#endif
while (ipending) {
struct _isr_table_entry *ite;
z_sys_trace_isr_enter();
index = find_lsb_set(ipending) - 1;
ipending &= ~(1 << index);
ite = &_sw_isr_table[index];
#ifdef CONFIG_EXECUTION_BENCHMARKING
extern void read_timer_end_of_isr(void);
read_timer_end_of_isr();
#endif
ite->isr(ite->arg);
sys_trace_isr_exit();
}
_kernel.nested--;
#ifdef CONFIG_STACK_SENTINEL
z_check_stack_sentinel();
#endif
}
#ifdef CONFIG_DYNAMIC_INTERRUPTS
int z_arch_irq_connect_dynamic(unsigned int irq, unsigned int priority,
void (*routine)(void *parameter), void *parameter,
u32_t flags)
{
ARG_UNUSED(flags);
ARG_UNUSED(priority);
z_isr_install(irq, routine, parameter);
return irq;
}
#endif /* CONFIG_DYNAMIC_INTERRUPTS */